Radiant|Lab Grown|IGI

2.51ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG517226310

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG517226310

Diamond specifications and retailer prices

From €1,754 EUR
$1,960 USD
As of October 31, 2026
Save €7,183 EUR (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €10,914 EUR at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 2.51ct lab-grown radiant diamond

This 2.51ct lab-grown radiant sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517226310 or 517226310. Listed at 14 retailers as of October 31, 2026, with a 409% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517226310
Dimensions8.72 × 6.66 × 4.68 mm
L/W Ratio1.31
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.72 mm6.66 mm2.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517226310
Side View
Table 69.0%Crown 48°Girdle: STK-THKPavilion 31.9°Culet: NoneDepth 70.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €8,937 EUR|Low: €1,754 EUR|High: €10,914 EUR|Avg: €5,558 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Reve Diamonds
November 1, 2026
Retailer 5€1,754 EUR
Retailer 4€3,597 EUR
Retailer 9€3,794 EUR
Retailer 8€4,029 EUR
Retailer 6€4,173 EUR
Retailer 2€5,435 EUR
Retailer 3€5,534 EUR
Retailer 7€6,462 EUR
Retailer 1€8,937 EUR
Reve Diamonds€10,914 EUR

43 data points across 10 retailers

14 retailers€1,754 EUR to €8,937 EUR

B+
Cheapest Retailer
-
€1,754 EUR
$1,960 USD
B
Retailer 2
-
€3,597 EUR
$4,019 USD
View
B
Retailer 3
-
€3,770 EUR
$4,212 USD
View
B
Retailer 4
-
€3,794 EUR
$4,239 USD
View
B
Retailer 5
-
€4,029 EUR
$4,501 USD
View
Final sale: no returns
B
Retailer 6
-
€4,173 EUR
$4,662 USD
View
Retailer 7
-
€4,173 EUR
$4,662 USD
View
Price last confirmed 19 days ago
B
Retailer 8
-
€4,220 EUR
$4,715 USD
View
B
Retailer 9
-
€5,214 EUR
$5,825 USD
View
B
Retailer 10
-
€5,435 EUR
£4,781 GBP
View
B
Retailer 11
-
€5,534 EUR
$6,183 USD
View
B
Retailer 12
-
€6,462 EUR
$7,219 USD
View
B
Retailer 13
-
€8,937 EUR
£7,862 GBP
View
Most Expensive
Reve Diamonds
9D25E17C9 · Nov 1
€10,914 EUR
$12,194 USD
View
Price under review
13 more retailers have this diamond
Prices start from €1,754 EURSave up to €7,183 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
2.51ct Radiant
€1,754 EUR